Choose the most suitable option to fill in the blanks: ( MODALS) 1. I didn't feel very well yesterday. I eat anything.
a) couldn't
b) cannot
ç) mustn't

2. If you don't start working harder, you repeat the course next year.
a)have to
b) must
c) will have to

3. Entrance to the museum was free. We pay to get in.
a) needn't
b) didn't need to

modals are auxiliary verbs that express the mode of action denoted by the main verb.

i couldn't will have todidn't need to

Syllable added to a root word to change its meaning : affixan independent word--example run,walk,book : free morphemeaffix that gives grammatical meaning such as tense or number : inflectiona word part that must attach to a word in order to be usable : bound morphemedegree of comparison formed by adding -er or more to an adjective : comparativedegree of comparison formed by adding -est or most to an adjective : superlativeaffix added to the beginning of a word : prefixaffix added to the end of a word : suffixroot word of lovable : lovetwo roots used together to form one word : combining form